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ralphdieter
11 months ago

The radius OP has the slope 4/(−1)=-4. It stands perpendicular to the tangent through P. It has the pitch 1/4. And if you use P in y=1/4x+c, you can determine c.

Halbrecht
11 months ago

Circle radius

(-1)2 + 42)

Center in (0/0)

.

Circular equation

x2 + y2 = 17…………….17=r2

.

Determine straight through (0/0) and P with slope mP

The tangent has the slope mT

mT*mP = -1……………..

.

With this you have mT and a point and can

4 = mT * -1 + b

b determination